10 PCB for $1 Rasspberry Pi 4 for free

Monthly Archives: August 2019

  1. August 30, 2019

    Best Raspberry Pi 4 Projects Guide

    Raspberry Pi 4 has been launched for months, maybe you have had one, otherwise please check the latest Elecrow Raspberry Pi 4 Kit (P4 (4GB) included).

    Since the Pi 4 has upgraded significantly in its speed, memory and data connection, now you can make more projects than before, with better performance. Elecrow selects a total projects out of the internet for you.

     PS: We will keep updating this post for months, please bookmark it.


    For the Beginners:

    1. Build a New Computer
    2. Enhance Your Home Network
    3. Enjoy Pi-Based Gaming and Streaming
    4. Expand
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  2. August 22, 2019

    One Minute to Understand AXI and Utilize It for Free

    1. What is AXI?

    AXI is short for automated X-ray inspection, it's one of the most commonly used approaches for defect inspection in PCB Assembly. Not only does AXI check the solder joints under components, but it also reveals many defects in solder joints that may not be visible by the ordinary optical inspection equipment.

    2. How Does AXI Work?

    In order to effectively inspect the PCB Assembly’s quality, three conditions are required for AXI:

    First, X-ray is a must:

    Unlike automated optical inspection (AOI), automated X-ray inspection (AXI) uses 

    X-rays as its light source, instead of visible light, and utilize its penetrating a

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